 Three years younger than Kelsey Grammer, 24. 24 years old. He was the youngest cast member. Wow. Woody Harrelson. Shelley Long, how old do you think that, was it Diane? Yeah, she played Diane. But with the suits that she wore, she always had like little suits on with little ruffly collars and the big, goofy, curly hair, like she had put a set of hot rollers in them. How old do you think she was? She seemed maybe 40.